Effect of Alisma Extract on Production Performance and Cholesterol Metabolism of Green-Eggshell Chickens

Abstract:

The effects of Alisma orientalis extracts with different concentration on the production performance，egg quality，serum lipid indexes and yolk cholesterol content of green-eggshell chickens. Five groups of 190-day-old green-shell chickens with a similar laying rate were randomly assigned from 225 chickens. In each group，there were 3 replicates with 15 laying chickens per replicate. The blank control group was fed without the extracts of Alisma orientalis，while the positive control was fed with 0.58 mg/kg Lovastatin. The experimental group had 0.1%，0.3% and 0.5 % extracts of Alisma orientalis，respectively，for 42 days. The egg production rate was increased by 12.28 % with 0.5 % extracts of Alisma orientalis compared with the blank control group. The egg yolk cholesterol was significantly reduced by 24.2% using 0.3% extracts，while 35.5% decrease for triglyceride levels and 51.97% decrease for serum cholesterol. The immune index was greatly improved by 0.1% extracts. A certain dose of Alisma orientalis extracts could thus reduce the cholesterol level of egg and serums，to improve the quality of eggs and chickens immunity. The optimal dosage was recommended as 0.3%.